Blue bells will be singing horses! This strange message, attached to the leg of a wounded homing pigeon, involves Nancy Drew in a dangerous mission. Somewhere an elderly woman is being held prisoner in a mansion, and Nancy is determined to find and free her. Meanwhile, the young detective’s close friend, Helen, begs her to solve a second mystery. Helen’s grandparents, the Cornings, are frightened by a sinister wheel of blue fire that appears after dark in the woods outside their home at lonely Sylvan Lake. When Nancy discovers the significance of the eerie signal, she also learns that her two mysteries are connected.

What secret life-giving power does the exquisite ivory elephant charm contain? Can the trinket really protect its wearer from all harm? Nancy Drew finds out when the owner of the Bengleton Wild-Animal Show asks her to investigate one of the performers who may be involved in some mysterious illegal scheme.The girl detective’s assignment becomes complicated when the elephant trainer’s young assistant, Rishi, seeks refuge at the Drew home from his cruel foster father, Rai.While following clues to help the boy find his real father, Nancy learns about an eerie abandoned house. She is harassed by its strange owner, Anita Allison, and the fiendish Rai. How Nancy uses the ivory charm, reunites a maharaja with his son, and brings the evildoers to justice will mystify readers from beginning to end.

Nancy must figure out the connection between a mysterious diary and a suspicious house fire.

Kitty and Johnny Blair, two famous actors, adopt baby twins who were mysteriously found in a boat along the river. The cruel Blairs have only adopted the babies as a publicity stunt, as they hope to raise the children as actors, which will help their own careers. Nancy sets off to find their real mother and take them away from the Blairs.

When Nancy receives a letter informing her she’s heir to a fortune, she decides to track down the sender, as well as the other Nancy Drew.

In the course of solving the mystery of an old man's disappearing fortune, Nancy both starts and ends a family feud and reveals the identity of an orphan of unknown parentage. The Sign of the Twisted Candles is the ninth volume in the Nancy Drew Mystery Stories series. As the second volume written by Walter Karig, it was originally published in 1933 under the pseudonym Carolyn Keene.

THERE'S MORE EXCITEMENT ON THIS CRUISE SHIP THAN NANCY BARGAINED FOR! Nancy, Bess, and George are going on a cruise around the Great Lakes for a fantastic end-of-summer vacation! As soon as the girls set foot on the ship, though, they smell something fishy. Their new friend Amber is upset because her boyfriend, Craig, is neglecting her. After a little investigating on her friend's behalf, Nancy learns that Craig is really a detective. He's been busy hunting for a mastermind diamond thief who may well be on the ship. And it turns out Craig can use some help. Soon Nancy's hunting for clues on land and offshore. Where there's stolen diamonds, though, there's danger -- and Nancy and her friends are soon caught in the thick of it. Will Nancy be able to crack this case before her ship is sunk?